<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
   <p><input type="button" value="打开窗口"onclick="openWin()"></p> 
   <p><input type="button" value="关闭窗口"onclick="closeWin()"></p>
   <p><input type="button" value="检测窗口是否关闭"onclick="checkWin()"></p>
   <p id='mgs'></p>
   <script>
   var myWindow;
   function openWin(){
       myWindow=window.open('https://music.163.com/','newWin','width=400,height=200,left=200');
       myWindow.document.write('<p>窗口名称为：'+myWindow.name+'</p>');
       myWindow.document.write('<p>当前窗口的父窗口地址：'+window.parent.location+'</p>');
   }function closeWin(){
       myWindow.close();
   }function checkWin(){
       if (myWindow){
           var str=myWindow.closed ? '窗口已关闭！':'窗口未关闭!';
       }else{
           var str='窗口没有被打开！';
       }
       document.getElementById('msg').innerHTML=str;     
   }
   </script>
</body>
</html>